Hard alloy threaded handle double-edge reinforced drill bit

Abstract

The utility model relates to the technical field of drill bits, in particular to a hard alloy threaded handle double-edge reinforced drill bit which comprises a fixing ring and a connecting cylinder, the inner wall of the connecting cylinder is connected with a clamping plate through a threaded handle, the connecting cylinder is connected with a fixing block through a fixing groove, and the fixing block is connected with the connecting cylinder through a fixing ball. The device has the advantages that direct falling is avoided through connection of the threaded handle and the connecting cylinder, when the connecting pipe can be limited through the sliding column, the whole device is not prone to loosening, multi-layer protection is achieved, and the danger possibly generated when the threaded handle falls can be effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit equipment technical field, concretely is hard alloy screw handle double edge reinforced type drill bit. BACKGROUND

[0002] The screw handle drill bit can be used for drilling holes in wood in the woodworking field, and can be used for drilling holes in concrete in the concrete field. The drill bit is mainly made of hard alloy, has high hardness and good wear resistance, and can improve the drilling efficiency. The drill bit also has impact resistance and fatigue resistance, which can prolong the service life of the drill bit.

[0003] Chinese patent CN 213540292 U discloses a drill bit assembly with a threaded shank, which belongs to the technical field of drill bit equipment. The technical solution is as follows: a drill bit and a drill shank are provided, the drill bit is provided with a fixed column at the bottom, the outer wall of the fixed column is provided with external threads, the other end of the fixed column opposite to the drill bit is provided with a positioning column, the outer wall of the positioning column is uniformly provided with positioning blocks, the outer wall of the drill shank is provided with the same external threads as those on the fixed column, a positioning hole is formed in the center of one end of the drill shank, the outer wall of the positioning hole is uniformly provided with limiting grooves, a lock ring is sleeved on the drill shank, and the inner wall of the lock ring is provided with internal threads matched with the external threads. Compared with the prior art, the device is connected by inserting the positioning column into the positioning hole, and then the drill bit and the drill shank are fixed by rotating the lock ring, so that the device becomes a drill bit and drill shank separated structure. When the drill bit is damaged, the drill bit can be directly replaced, and the drill rod can still be used, reducing material waste.

[0004] However, in the process of using the above-mentioned patent, the drill bit and the drill shank are fixed by the lock ring, which is easy to loosen during rotation and cause the two to separate, which is dangerous. Therefore, the hard alloy screw handle double edge reinforced type drill bit is proposed to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a hard alloy screw handle double edge reinforced type drill bit to solve the problem of loosening of the lock ring as mentioned in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a hard alloy screw handle double edge reinforced type drill bit, comprising: a fixed ring and a connecting cylinder, the inner wall of the connecting cylinder is connected with a clamping plate through a threaded shank, the connecting cylinder is connected with a fixed block through a fixed groove, and the fixed block is connected with the connecting cylinder through a fixed ball.

[0007] Preferably, the surface of the connecting cylinder is provided with a sliding groove, the surface of the sliding groove is provided with a long groove, the connecting cylinder is slidingly connected with a sliding ring through the sliding groove, the inner wall of the long groove is slidingly connected with a sliding column, one end of the sliding column is in contact with the sliding ring, and the other end of the sliding column passes through the long groove and is located in the interior of the connecting cylinder.

[0008] Preferably, the lower end of the connecting cylinder is fixedly connected with a drill bit, a fixing groove is arranged on the surface of the connecting cylinder, a fixing block is fixedly connected with the inner wall of the fixing groove, and a fixing ball is fixedly connected with the surface of the fixing block.

[0009] Preferably, the upper end of the connecting cylinder is fixedly connected with a threaded shank, the upper end of the threaded shank is fixedly connected with a clamping plate, the two sides of the clamping plate are in contact with a resisting plate, and the upper end of the clamping plate is fixedly connected with a connecting pipe.

[0010] Preferably, a spherical hole is arranged on the lower surface of the inner wall of the connecting cylinder, the inner ring surface of the spherical hole is in contact with the surface of the fixing ball, and the surface of the fixing ring is in contact with the lower surface of the inner wall of the connecting cylinder.

[0011] Preferably, the threaded shank is threadedly connected with the inner wall of the connecting cylinder, the resisting plate is fixedly connected with the upper surface of the inner wall of the connecting cylinder, and the surface of the connecting pipe is in contact with the upper end of the resisting plate and the inner wall of the connecting cylinder at the same time.

[0012] Compared with the prior art, the device has the advantages that the threaded shank is connected with the connecting cylinder to avoid direct falling off, the sliding column can limit the connecting pipe, the device as a whole is not easy to loosen, and there are multiple protections, so that the danger caused by falling off of the threaded shank can be effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a three-dimensional schematic view of the overall structure of the device.

[0014] Fig. 2 It is a forced schematic view of the overall structure of the device.

[0015] Fig. 3 It is a bottom view of the connecting cylinder of the device.

[0016] Fig. 4 It is a front view of the threaded shank of the device.

[0017] In the drawings: 1, threaded shank; 2, fixing ring; 3, fixing ball; 4, connecting cylinder; 5, drill bit; 6, fixing block; 7, fixing groove; 8, spherical hole; 9, long groove; 10, clamping plate; 11, sliding groove; 12, connecting pipe; 13, resisting plate; 14, sliding column; 15, sliding ring. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the drawing to the utility model embodiment carries out further detailed explanation.Should understand, the specific embodiment described here is a part of the embodiment of the utility model, instead of all the embodiments, only use to explain the embodiment of the utility model, and do not use to limit the embodiment of the utility model, all other embodiments obtained by the ordinary skill in the art without making the creative labor are within the scope of the utility model protection.

[0019] Please refer to Figs. 1 to 4 The utility model provides a technical scheme: hard alloy threaded shank double blade reinforced type drill bit, it includes: fixed ring 2 and connecting barrel 4, the upper end of connecting barrel 4 can be connected with other driving devices, rotating is driven by driving device and connecting barrel 4, the surface of connecting barrel 4 is provided with sliding slot 11, the surface of sliding slot 11 is provided with long slot 9, connecting barrel 4 is slidably connected with sliding ring 15 through sliding slot 11, and the locking and unlocking function of sliding column 14 is played by sliding ring 15 in sliding slot 11, locking can form protection to the internal structure, avoid accidental drop and cause harm, the inner wall of long slot 9 is slidably connected with sliding column 14, and the accidental drop of threaded shank 1 can be prevented by sliding sliding column 14, one end of sliding column 14 is in contact with sliding ring 15, and the other end passes through long slot 9 and is located in the inside of connecting barrel 4.

[0020] The lower end of connecting barrel 4 is fixedly connected with drill bit 5, and the whole of drill bit 5 is hard alloy double blade reinforced type, the material whole strength is high and durable, the surface of connecting barrel 4 is provided with fixed groove 7, the inner wall of fixed groove 7 is fixedly connected with fixed block 6, the texture of both ends of fixed block 6 is hard, and the middle part is elastic, the surface of fixed block 6 is fixedly connected with fixed ball 3, fixed ball 3 is located in the midpoint portion of fixed block 6, and the slight deformation of fixed block 6 can be generated by extruding fixed ball 3, so as to facilitate the installation and fixation of fixed ring 2, the upper end of connecting barrel 4 is fixedly connected with threaded shank 1, the upper end of threaded shank 1 is fixedly connected with clamping plate 10, clamping plate 10 is arc-shaped, and the both sides of clamping plate 10 are in contact with abutment plate 13, clamping plate 10 is fixed between the two abutment plates 13 by abutment plate 13, so as to determine the angle of the whole fixed ring 2, the upper end of clamping plate 10 is fixedly connected with connecting pipe 12, and the both ends of connecting pipe 12 are connected with each other to form a ring.

[0021] The lower surface of the inner wall of the connecting cylinder 4 is provided with spherical holes 8, the number of which matches the fixed balls 3, the inner annular surface of the spherical holes 8 is in contact with the surface of the fixed balls 3, so as to determine whether the threaded shank 1 is connected to the connecting cylinder 4 in place, and the fixed ring 2 can be protected by the fixed balls 3, the surface of the fixed ring 2 is in contact with the lower surface of the inner wall of the connecting cylinder 4, and the threaded shank 1 is threadedly connected with the inner wall of the connecting cylinder 4, so that the fixed ring 2 is tightly connected with the connecting cylinder 4 and is not easy to fall off, the abutting plate 13 is fixedly connected to the upper surface of the inner wall of the connecting cylinder 4, and the clamping plate 10 and the connecting pipe 12 are flexible and bendable, so as to ensure that the clamping plate 10 and the connecting pipe 12 can rebound and reset at a suitable position during the rotation of the threaded shank 1, and the surface of the connecting pipe 12 is in contact with the upper end of the abutting plate 13 and the inner wall of the connecting cylinder 4 at the same time.

[0022] When the device works, after the checking device is error-free, the fixed ring 2 gradually penetrates into the interior of the connecting cylinder 4 by rotating the threaded shank 1, in the process, the fixed ball 3 will extrude the fixed block 6 so that the fixed ball 3 completely enters the fixed groove 7, and the clamping plate 10 and the connecting pipe 12 will be bent and deformed under the action of the abutting plate 13, when the threaded shank 1 continues to rotate until the fixed ball 3 pops out and is in contact with the spherical hole 8 of the inner wall of the connecting cylinder 4, the rotation is stopped, at this time, the clamping plate 10 returns to the original state and is located between the abutting plates 13, the two ends of which are in contact with the abutting plates 13, and the connecting pipe 12 also returns to the original shape, then the sliding column 14 is slid, so that one end of the sliding column 14 is located between the connecting pipe 12 and the threaded shank 1, at this time, the sliding ring 15 is slid downward, so that the inner annular surface thereof is in contact with the sliding column 14, the locking of the sliding column 14 is completed, the device is easy to install as a whole, and when the threaded shank 1 is excessively worn and invalid, the fixed ball 3 will first fix the fixed ring 2 to avoid falling off, and the connecting pipe 12 can be limited by the sliding column 14 when it falls off, so as to prevent falling off and increase the safety of the whole.

[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A two-lipped, reinforced, carbide-tipped twist drill having a threaded shank characterized by: The hard alloy threaded shank double blade reinforced type drill bit comprises a fixed ring (2) and a connecting cylinder (4), the inner wall of the connecting cylinder (4) is connected with a clamping plate (10) through a threaded shank (1), the connecting cylinder (4) is connected with a fixed block (6) through a fixed groove (7), and the fixed block (6) is connected with the connecting cylinder (4) through a fixed ball (3).

2. The carbide threaded shank double-edge reinforced drill bit according to claim 1, characterized in that: The surface of the connecting cylinder (4) is provided with a sliding groove (11), the surface of the sliding groove (11) is provided with a long groove (9), the connecting cylinder (4) is slidingly connected with a sliding ring (15) through the sliding groove (11), the inner wall of the long groove (9) is slidingly connected with a sliding column (14), one end of the sliding column (14) is in contact with the sliding ring (15), and the other end of the sliding column (14) penetrates through the long groove (9) and is located in the interior of the connecting cylinder (4).

3. The carbide threaded shank double-edge reinforced drill bit according to claim 1, wherein: The lower end of the connecting cylinder (4) is fixedly connected with a drill bit (5), the surface of the connecting cylinder (4) is provided with a fixed groove (7), the inner wall of the fixed groove (7) is fixedly connected with a fixed block (6), and the surface of the fixed block (6) is fixedly connected with a fixed ball (3).

4. The carbide threaded shank double-edge reinforced drill bit of claim 1 wherein: The upper end of the connecting cylinder (4) is fixedly connected with a threaded shank (1), the upper end of the threaded shank (1) is fixedly connected with a clamping plate (10), the two sides of the clamping plate (10) are in contact with a resisting plate (13), and the upper end of the clamping plate (10) is fixedly connected with a connecting pipe (12).

5. The carbide threaded shank double-edge reinforced drill bit of claim 1 wherein: The lower surface of the inner wall of the connecting cylinder (4) is provided with a spherical hole (8), the inner ring surface of the spherical hole (8) is in contact with the surface of the fixed ball (3), and the surface of the fixed ring (2) is in contact with the lower surface of the inner wall of the connecting cylinder (4).

6. The carbide threaded shank double-edge reinforced drill bit according to claim 1, characterized in that: The threaded shank (1) is threadedly connected with the inner wall of the connecting cylinder (4), the resisting plate (13) is fixedly connected to the upper surface of the inner wall of the connecting cylinder (4), and the surface of the connecting pipe (12) is in contact with the upper end of the resisting plate (13) and the inner wall of the connecting cylinder (4) simultaneously.

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